some bugs in l230 on ubuntu (english and indonesia)

hello, i'm from indonesia, sorry for my bad english. i found some bugs in NComputing L230 running on Ubuntu 8.10. This's my bugs :
1. if nc-host/nc-server given DNS that invalid/wrong, then L230 devices will show blank gray screen/
2. if nc-host/nc-server given Gateway that invalid, then nc-host/nc-server conflict when loading at shutdown/restart
3. if nc-host/nc-server not given any gateway, it won't show L230 devices in nc-console (vSpace)
anybody had a same problem in Ubuntu 8.10 / Ubuntu 10.04?